diff --git a/.github/workflows/github-actions-vscode-extension.yml b/.github/workflows/github-actions-vscode-extension.yml
index 9bc04c9e..6d83bea4 100644
--- a/.github/workflows/github-actions-vscode-extension.yml
+++ b/.github/workflows/github-actions-vscode-extension.yml
@@ -15,7 +15,7 @@ jobs:
       matrix:
         node-version: [12.14]
         os: [windows-latest, macos-latest, ubuntu-latest]
-      # fail-fast: false
+      fail-fast: false
 
     runs-on: ${{ matrix.os }}
 
diff --git a/.gitignore b/.gitignore
index 273a0901..c02027c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 out
+dist
 node_modules
 **/*.vsix
 npm-debug.log
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index fa156951..5b4dd2d7 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -10,6 +10,7 @@
 		"davidanson.vscode-markdownlint",
 		"vscode-icons-team.vscode-icons",
 		"animu5.vscode-file-header-comment",
+		"eamodio.tsl-problem-matcher",
 		"msjsdiag.debugger-for-chrome",
 	],
 	// List of extensions recommended by VS Code that should not be recommended for users of this workspace.
diff --git a/.vscode/launch.json b/.vscode/launch.json
index 3916e637..ca09c04b 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -13,9 +13,9 @@
 			"stopOnEntry": false,
 			"sourceMaps": true,
 			"outFiles": [
-				"${workspaceFolder}/out/**/*.js"
+				"${workspaceFolder}/dist/**/*.js"
 			],
-			"preLaunchTask": "compile"
+			"preLaunchTask": "npm: webpack"
 		},
 		{
 			"name": "Launch Extension (skip views)",
@@ -28,9 +28,9 @@
 			"stopOnEntry": false,
 			"sourceMaps": true,
 			"outFiles": [
-				"${workspaceFolder}/out/**/*.js"
+				"${workspaceFolder}/dist/**/*.js"
 			],
-			"preLaunchTask": "compile - quick"
+			"preLaunchTask": "npm: webpack - quick"
 		},
 		{
 			"name": "Integration Tests",
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index 0cb3f344..c3310f6c 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -42,7 +42,7 @@
 				"reveal": "never"
 			},
 			"problemMatcher": [
-				"$tsc-watch"
+				"$ts-webpack"
 			]
 		},
 		{
diff --git a/.vscodeignore b/.vscodeignore
index c471f2c2..331dc53a 100644
--- a/.vscodeignore
+++ b/.vscodeignore
@@ -23,6 +23,11 @@ coverage/
 .nyc_output/
 .github/
 downloadVisJs.js
+
+webpack.config.js
+node_modules
+views/.eslintrc.js
+
 how_to_contribute.md
 
 views/common/node_modules
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b056db50..b7dad794 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # PDDL support - What's new?
 
+## [Unreleased]
+
+- Faster start-up time due to migration to Webpack. Please report any errors that fell through my week of hands-on usage/testing.
+
 ## 2.20.3
 
 ### Initial state visualization
diff --git a/package.json b/package.json
index 3b87aef8..3c19d8a1 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "onView:pddl.tests.explorer",
     "onUri"
   ],
-  "main": "./out/extension",
+  "main": "./dist/extension",
   "contributes": {
     "languages": [
       {
@@ -988,8 +988,10 @@
     "compile": "tsc -p ./ && copyfiles --flat ./src/planView/model/package.json ./out/planView/model/ && copyfiles --flat ./src/modelView/model/package.json ./out/modelView/model/ && cd views/common && npm run compile && cd ../searchview && npm run compile && cd ../planview && npm run compile && cd ../modelView && npm run compile && cd ../..",
     "watch": "tsc -w -p ./",
     "lint": "eslint src --ext ts",
-    "vscode:prepublish": "npm run compile",
+    "vscode:prepublish": "webpack --mode production",
     "update-vscode": "node ./node_modules/vscode/bin/install",
+    "webpack": "webpack --mode development",
+    "webpack-dev": "webpack --mode development --watch",
     "package": "vsce package",
     "pretest": "npm run compile",
     "test:unit": "mocha -- out/test/**/*Test.js && cd views/searchview && npm test && cd ../..",
@@ -1040,9 +1042,12 @@
     "minimist": ">=0.2.1",
     "mocha": "^8.2.0",
     "tmp-promise": "^2.0.2",
+    "ts-loader": "^7.0.3",
     "typescript": "^4.1.3",
     "vsce": "^1.80.0",
     "vscode-codicons": "0.0.12",
-    "vscode-test": "^1.0.0"
+    "vscode-test": "^1.0.0",
+    "webpack": "^4.43.0",
+    "webpack-cli": "^3.3.11"
   }
 }
diff --git a/webpack.config.js b/webpack.config.js
new file mode 100644
index 00000000..a62b6fef
--- /dev/null
+++ b/webpack.config.js
@@ -0,0 +1,43 @@
+//@ts-check
+
+'use strict';
+
+const path = require('path');
+
+/** @type {import('webpack').Configuration} */
+const config = {
+    target: 'node',
+    entry: './src/extension.ts',
+    output: {
+        path: path.resolve(__dirname, 'dist'),
+        filename: 'extension.js',
+        libraryTarget: "commonjs2",
+        devtoolModuleFilenameTemplate: '../[resource-path]'
+    },
+    devtool: 'source-map',
+    externals: {
+        vscode: 'commonjs vscode' // todo: anything else?
+    },
+    resolve: {
+        extensions: ['.ts', '.js']
+    },
+    module: {
+        rules: [
+            {
+                test: /\.ts$/,
+                exclude: /node_modules/,
+                use: [
+                    {
+                        loader: 'ts-loader',
+                /*options: {
+                    compilerOptions: {
+                        "module": "es6" // override `tsconfig.json` so that TypeScript emits native JavaScript modules.
+                    }
+                }*/
+                    }
+                ]
+            }
+        ]
+    }
+};
+module.exports = config;